Particle system made in pure armv8

Made for Computer Organization class

• The main implementation is located in app.s
• Screen size is 512x512 with 16 bit RGB pixel colors.
• X0 register points to the frame buffer base (first pixel)
• main.s contains the frame buffer and particle memory initialization, and branchs to app.s
• Use dashboard memory watch 0x40080100 256 in a armv8 qemu instance while running to look at the frame buffer